Rotary disk plow.



'PATENTED SEPT. 4, 1906.

w. HAY. ROTARY DISK PLOW. APPLICATION FILED T12R23, 1906.

INVENTOR.

UNITED s'rA'rEs PATENT OFFICE.

WALTER HAY, 0F OMAHA. NEBRASKA, ASSIGNOR T0 THOMAS F. s'raouo,

- or OMAHA, NEBRASKA.

ROTARY DISK PLOW.

Patented Sept. 4, 1906.

To all whom itmay concern:

Be it knownthat I, W LTER HAY, a'citiz'en of the United States, residing at Omaha, in

the county of Douglas andStat'e ofNebi'aska,"

have invented certainnew and usefullmprovements in Rotary Disk'Plows, of which the following is a specification.

The more prominent objects of my invention relate to the bearings and comprise a construction'whereby friction and wearare reduced to a minimum and wherein the use of oil or other lubricant can be entirely disensed with. In accomplishing this result hall-bearings are used entirely.

I am aware of the fact that some disk lows have heretofore been constructed with liall and roller bearin s. However, their employment has invaria hly been unsatisfactory owing, primarily, to inadequate provision in their construction for the law of leverage and bearings best adapted thereto, and consequently to excessive friction and rapid wear and the resulting necessity for frequent applications of lubricating-oil, which, while afording temporary relief and preverting possible stop age of rotation, serves to greatly increase t e wear by causing sand or other ri'tty particles (sure to get to the bearings rom thevery nature of the device) to adhere to the oiled wearing-surfaces.

It has been demonstrated after much experimenting with ball-bearings subjected to considerable pressures that in order to obtain satisfactory results the balls must have two points of thrust-contact only and that in such a bearing no oil is required and there is no tendency to heat; also, that in bearings subjected to considerable ressures where one row of balls only is used for both end and lateral thrusts or where such double thrust eventually occurs through wear of some other bearin excessive friction "results and unlessplentifully supplied with lubricatingoil injury manifeste y heating occurs.

One object in adopting ball-bearings as being superior to other forms of bearings for all thrusts in a device of this character arises from the fact that when sand or dirt gets on the bearing-surfaces the difficulty of rotation of ball or roller is proportionate to the extent of their bearing-contactthat is to say, a ball will almost invariably force particles out of its way while a roller cannot and, as a result, frequently becomes clogged, and

wears'to a state of uselessncssq $1 ha o provements, and

a bearing devoid of balls or rollers rapidly s truc ted a rotary'jdis plow having an extended bearing-surface to obviate undue leverage and wherein the principal thrusts are resisted by balls having a twooint thrustcontact and wherein no oil or ot ier lubricant is to be used and wherein sand or dirt that enters to the bearings will find ready means of egress.

Referring to the accompanying drawings, Figure 1 represents a side sectional elevation of a rotary disk low embodying my imigs. 2, 3, and 4 details of construction hereinafter referred to.

A is a disk of the usual concavo-convex form securel fastened to the disk-seat B by means of a p urality of bolts 0. Firmly held within the disk-seat and concentric therewith is the bearing-ring D, ad'acent and concentric with the bearingwhich is concentric with and firmly l i e lfi by the bearingbase F. Each bearing-ring is constructed with an outwardly-pro ecting flange. That of ring D forms part of the ball-race for balls G G and also for ballsH H. That of ring E forms part of the ball-race for balls H H only.

The stud-shaft I, concentric with the bearing-ring D, is force-fitted to the disk-seat B and projects at right angles therefrom and throu h the bearing-base F to receive on its threaded art the cone-nut or threaded conebearing which when adjusted to come in contact with the row of balls K, retained within the cup-shaped bearing L, held firmly by and concentric with the bearing-base F,

G'uid d'by the if re "oing fac serves to hold the disk-seat in its proper working position.

X is a flange on the disk-seat B, covering outwardly the ring D, balls G G, ring E, and projecting over the bearing-base F to form a dust-cap.

Y is a flange projecting outwardly from the bearing-base F and around which the rin E is closely seated.

I t will be observed that the base of ring D is set into the disk-seat B, but projects outwardly therefrom, so that the distance botween the bases of the ring E and the ring D is less than that between the base of the ring E and the disk-seat B. Hence when the stud-shaft I is drawn into position by the cone-nut J the external balls G G contact I v with D and E to sustain end thrust before the internal balls H H can contact with E and B. In like manner the space between the flanges of D and E is so pro ortioned that the balls H H bear the entire ateral thrust,while the space between the flange of D and the external flange X is greater than the dlameter of the balls G G, so that the latter balls are free from lateral thrust. By constructing the, rin s without grooved ball-races each ball will have a two-point-thrust contact only.

The rear end of the stud-shaft I is reduced, in size, as shown more clearly in Fig. 2, to form the s uare shoulder M and the threaded stud N. 2 short keyway O is made in the shoulder M.

Fig. 3 shows a key-washer, the bod P having a centrally-located hole Q, whici is slightly larger in diameter than the stud N, Fig. 2. The key It is formedironi a narrow projectin part of the washer-body and is doubled by bending to produce the raised part shown.

Fig. 4 is a rear view of the cone-nut or threaded cone-bearing J. which is constructed with a hexagonal projection having a slot or keywav S through each of the six sides.

From the foregoing and by reference to the drawings it is obvious that u'hent he cone-nut or threaded cone-bearilw J {is 'ltllC-ll-tldjusted to its proper msltion on the studshaft I, Flg. 1, it will a positively retained or locked in such position by means of the key-washer P, which is held in place on the threaded stud N and next the shoulder M, Fig. 2, by the nut 'l, the key it of said keywasher entering one of the slots in the conenut or threaded cone-bearing J at the same time the raised part of the key enters the keyway in the shoulder of the studshaft I.

The plow can be connected to a low-beam or another su port by any suitab e meansas, for exam e, a common standard U, boltfastened to t c said bearing-base F.

It will be understood that the details of construction as here shown and described can be modified or changed, if desired, without departing from the spirit of my invention.

What i claim as invention is- 1. In a rotary disk plow, in combination, a

concave-convex disk, the disk-seat B to which the said disk is fastened, the bearingbase F adapted to connect to a plow-beam standard or another support, the adj acentlypositioned bearmg-rings D and E forming'bebearing-base and having its rear end thread- 1 ed, the cone-nut or threaded cone-bearing J adjustably mounted on the said stud-shaft, the cup-shaped bearing L secured within the said bearing-base, sa1d cone-nut .and on shaped bearing forming between them a bailrace for a plurality of balls K, and means for preventlng the saidcone-nut from moving on the stud-shaft I. v

2. In a rotary diskplow, in combination, a concavo-convex disk, the disk-seat B, the bearing-base F adapted to connect to a lowbeam standard or another support, the earing-rings D and E forming separate ballraces, a plurality of balls G and H therein, the stud-shaft I fast to the disk-seat B and projecting through the bearing-base F and lavin the rear end of its major part thread.- ed and constructed with the'keyway O and the reduced art forming the shoulder M and the threade stud N, the cone-nut or threaded cone-bearing J constructed with one or more keyways or slots S and ada ted to screw ad- 'ustment on the stud-shaft the cup-shaped earing L secured within the bearing-base F,

.a ball-race having a plurality of balls K and the key-washer P formed with the projecting and raised key R, said ke washer being secured to the stud-shaft by means of the threaded stud N and nut Tand ada ted to lock the cone-nut or threaded coneearing J tothe stud-shaft I, substantially as described.

WALTER HAY.

Witnesses:

HARRY E. Roonns, CHAS. FLECK. 

